Speaker
Dr
Alberto Sanna
(MPIfR Bonn)
Description
At an early stage of stellar evolution, massive young stellar objects (YSOs) inject large amounts of mechanical energy into the ISM by powerful outflow phenomena, which are a main outcome of mass accretion onto the protostar. In turn, this outflow activity provides a major source of turbulent energy for the cluster gas. In this context, it is fundamental to properly characterize the dynamical interaction between massive YSOs and their surrounding envelopes over a wide range of spatial scales and physical phenomena.
This project aims at systematically quantify the energetics injected by massive forming stars into the ISM at their early stages of evolution, focusing on spatial scales on the order of 1000 AU. We propose to achieve this goal by means of high-resolution and high-sensitivity Jansky Very Large Array (JVLA) observations, in 3 spectral bands (from 6 to 22 GHz) and with an angular resolution of about 0.1 arcsec, of the hyper-compact radio continuum emission of a robust sample (40) of massive YSOs.
Author
Dr
Alberto Sanna
(MPIfR Bonn)